drm_rect.h File Reference

#include <linux/types.h>

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Classes
struct	drm_rect

Macros
#define	DRM_RECT_INIT(x, y, w, h)
#define	DRM_RECT_FMT   "%dx%d%+d%+d"
#define	DRM_RECT_ARG(r)   drm_rect_width(r), drm_rect_height(r), (r)->x1, (r)->y1
#define	DRM_RECT_FP_FMT   "%d.%06ux%d.%06u%+d.%06u%+d.%06u"
#define	DRM_RECT_FP_ARG(r)

Functions
bool	drm_rect_intersect (struct drm_rect *r, const struct drm_rect *clip)
bool	drm_rect_clip_scaled (struct drm_rect *src, struct drm_rect *dst, const struct drm_rect *clip)
int	drm_rect_calc_hscale (const struct drm_rect *src, const struct drm_rect *dst, int min_hscale, int max_hscale)
int	drm_rect_calc_vscale (const struct drm_rect *src, const struct drm_rect *dst, int min_vscale, int max_vscale)
void	drm_rect_debug_print (const char *prefix, const struct drm_rect *r, bool fixed_point)
void	drm_rect_rotate (struct drm_rect *r, int width, int height, unsigned int rotation)
void	drm_rect_rotate_inv (struct drm_rect *r, int width, int height, unsigned int rotation)

Macro Definition Documentation

DRM_RECT_ARG

#define DRM_RECT_ARG

(

r

)

drm_rect_width(r), drm_rect_height(r), (r)->x1, (r)->y1

DRM_RECT_ARG - printf arguments for &struct drm_rect @r: rectangle struct

DRM_RECT_FMT

#define DRM_RECT_FMT   "%dx%d%+d%+d"

DRM_RECT_FMT - printf string for &struct drm_rect

DRM_RECT_FP_ARG

#define DRM_RECT_FP_ARG

(

r

)

Value:

        drm_rect_width(r) >> 16, ((drm_rect_width(r) & 0xffff) * 15625) >> 10, \
        drm_rect_height(r) >> 16, ((drm_rect_height(r) & 0xffff) * 15625) >> 10, \
        (r)->x1 >> 16, (((r)->x1 & 0xffff) * 15625) >> 10, \
        (r)->y1 >> 16, (((r)->y1 & 0xffff) * 15625) >> 10

DRM_RECT_FP_ARG - printf arguments for &struct drm_rect in 16.16 fixed point @r: rectangle struct

This is useful for e.g. printing plane source rectangles, which are in 16.16 fixed point.

DRM_RECT_FP_FMT

#define DRM_RECT_FP_FMT   "%d.%06ux%d.%06u%+d.%06u%+d.%06u"

DRM_RECT_FP_FMT - printf string for &struct drm_rect in 16.16 fixed point

DRM_RECT_INIT

#define DRM_RECT_INIT	(		x,
			y,
			w,
			h
	)

Value:

        ((struct drm_rect){ \
        .x1 = (x), \
        .y1 = (y), \
        .x2 = (x) + (w), \
        .y2 = (y) + (h) })

DRM_RECT_INIT - initialize a rectangle from x/y/w/h @x: x coordinate @y: y coordinate @w: width @h: height

RETURNS: A new rectangle of the specified size.

Function Documentation

drm_rect_calc_hscale()

int drm_rect_calc_hscale	(	const struct drm_rect *	src,
		const struct drm_rect *	dst,
		int	min_hscale,
		int	max_hscale
	)

drm_rect_calc_vscale()

int drm_rect_calc_vscale	(	const struct drm_rect *	src,
		const struct drm_rect *	dst,
		int	min_vscale,
		int	max_vscale
	)

drm_rect_clip_scaled()

bool drm_rect_clip_scaled	(	struct drm_rect *	src,
		struct drm_rect *	dst,
		const struct drm_rect *	clip
	)

drm_rect_debug_print()

void drm_rect_debug_print	(	const char *	prefix,
		const struct drm_rect *	r,
		bool	fixed_point
	)

drm_rect_intersect()

bool drm_rect_intersect	(	struct drm_rect *	r,
		const struct drm_rect *	clip
	)

drm_rect_rotate()

void drm_rect_rotate	(	struct drm_rect *	r,
		int	width,
		int	height,
		unsigned int	rotation
	)

drm_rect_rotate_inv()

void drm_rect_rotate_inv	(	struct drm_rect *	r,
		int	width,
		int	height,
		unsigned int	rotation
	)